Yes, I'm a pretty right leaning guy. I have a long time friend who is a socialist, another friend who is apolitical, another who's a gay liberal, and a wife who's pretty centrist. Politics don't stop people from having other interests in common.
I lean right and they banned me. It's not about being left leaning or right leaning. Either you're far one way or another or you're not welcome anymore.
It has been my experience that the closer you get to the CEO position the more a person believes "I don't have to know how to do the task, I just have to employ someone who does!"